I have been using the same msd card for well since before I had a BB storm. When I moved to android I did do a format. And have not done one since. I have a apk for a blackhats app in there some where. I just got a new card, a 64gb g.skill class 10. At 30 buks I thought it was a good buy. I also bought a asus memo tab. I originally got the card for teh tablet. But id like to use it on my s5. So I ran into some questions that I dont know about and am wondering what to do... and the process? So if anyone would please help e with the following. .. 1. Format teh old card in windows 8 then put in s5? Or in the s5? 2. most of my photos from 2013 and 2014 are backed in google+. There are a few from 2011 and 2012 that do not have the colorful icon on the thumbnail. I guess they will get erased? I am sure there was something else but I got distracted and lost it in my drunkenness. Or is there a everything you need to know about switching out your mSD card thread?